from dataclasses import dataclass, field
from datetime import datetime


@dataclass(frozen=True)
class BrokerageAccountPayload:
    external_id: str
    name: str
    number: str
    balance: int


@dataclass(frozen=True)
class BrokerageAssetPayload:
    external_id: str
    ticker: str
    price: float


@dataclass(frozen=True)
class BrokerageHoldingPayload:
    external_id: str
    account_external_id: str
    asset_external_id: str
    ticker: str
    amount: float
    cost_basis: float
    purchase_date: datetime


@dataclass(frozen=True)
class BrokerageSnapshot:
    accounts: list[BrokerageAccountPayload] = field(default_factory=list)
    assets: list[BrokerageAssetPayload] = field(default_factory=list)
    holdings: list[BrokerageHoldingPayload] = field(default_factory=list)